| 摘要 |
An exercise device includes a frame having a pair of crank arms pivotally supported thereupon. Each crank arms engages a drive link, and each drive link engages a guide member. A foot link is pivotally connected to each guide member, and a control link pivotally connects each foot link to a drive link. In operation, the drive links and crank arms cooperate to cause the reciprocal motion of the guide members, and the control link operates to vary the angle between each foot link and its associate guide member as that guide member reciprocates. The apparatus provides a very natural running and stepping action for a user who is positioned on the foot links.
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